1.2 integrated math Grade 8

Solve the equation.

3w + 7 = 19

Answer explanation

w = 4

Solve the equation.

2g − 13 = 3

Answer explanation

g = 8

Solve the equation.

36 = 13n − 4n

Answer explanation

n = 4

Solve the equation.

6c − 8 − 2c = −16

Answer explanation

c = -2

Solve the equation.

4(z + 5) = 32

Answer explanation

z = 3

Solve the equation.

6 + 5(m + 1) = 26

Answer explanation

m = 3

Solve the equation.

27 = 3c − 3(6 − 2c)

Answer explanation

c = 5

MODELING WITH MATHEMATICS

The altitude a (in feet) of a plane t minutes after liftoff is given by

a = 3400t + 600. How many minutes after liftoff is the plane at an altitude of 21,000 feet?

Answer explanation

t = 6 minutes